GM Service Manual Online
For 1990-2009 cars only
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Object Number: 412466  Size: SH
  • Inspect the camshaft journals and lobes for wear or scoring.
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  • Inspect the camshaft sprocket alignment notch for damage.
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  • Inspect the camshaft cover for damage or loose oil control baffles.
  •    • 
  • Clean the camshaft cover.
  •    • 
  • Wash the camshaft in solvent.
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  • Oil the camshaft.
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  • Inspect the camshaft cover for cracks or other signs of damage.
  •    • 
    Object Number: 895122  Size: SH
  • Inspect the valve lifters for scoring where they contact the camshaft.
  •    • 
  • Inspect the camshaft journals and lobes for wear or scoring.
  •    • 
  • Inspect camshaft sprocket alignment notch for damage.
  •    • 
  • Inspect the camshaft cover for damage or loose oil control baffles.
  •    • 
  • Clean the camshaft cover.
  •    • 
  • Wash the camshaft in solvent.
  •    • 
  • Inspect the camshaft cover for cracks or other signs of damage.